xref: /dragonfly/sbin/fsck/pass3.c (revision ef2687d4)
1 /*
2  * Copyright (c) 1980, 1986, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#)pass3.c	8.2 (Berkeley) 4/27/95
30  * $FreeBSD: src/sbin/fsck/pass3.c,v 1.7.2.1 2001/01/23 23:11:07 iedowse Exp $
31  */
32 
33 #include <sys/param.h>
34 
35 #include <vfs/ufs/dinode.h>
36 #include <vfs/ufs/dir.h>
37 #include <vfs/ufs/fs.h>
38 
39 #include <string.h>
40 
41 #include "fsck.h"
42 
43 void
44 pass3(void)
45 {
46 	struct inoinfo *inp;
47 	int loopcnt, inpindex, state;
48 	ufs1_ino_t orphan;
49 	struct inodesc idesc;
50 	char namebuf[MAXNAMLEN+1];
51 
52 	for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
53 		if (got_siginfo) {
54 			printf("%s: phase 3: dir %ld of %ld (%d%%)\n", cdevname,
55 			    inplast - inpindex - 1, inplast,
56 			    (int)((inplast - inpindex - 1) * 100 / inplast));
57 			got_siginfo = 0;
58 		}
59 		inp = inpsort[inpindex];
60 		state = inoinfo(inp->i_number)->ino_state;
61 		if (inp->i_number == ROOTINO ||
62 		    (inp->i_parent != 0 && state != DSTATE))
63 			continue;
64 		if (state == DCLEAR)
65 			continue;
66 		/*
67 		 * If we are running with soft updates and we come
68 		 * across unreferenced directories, we just leave
69 		 * them in DSTATE which will cause them to be pitched
70 		 * in pass 4.
71 		 */
72 		if (preen && resolved && usedsoftdep && state == DSTATE) {
73 			if (inp->i_dotdot >= ROOTINO)
74 				inoinfo(inp->i_dotdot)->ino_linkcnt++;
75 			continue;
76 		}
77 		for (loopcnt = 0; ; loopcnt++) {
78 			orphan = inp->i_number;
79 			if (inp->i_parent == 0 ||
80 			    inoinfo(inp->i_parent)->ino_state != DSTATE ||
81 			    loopcnt > countdirs)
82 				break;
83 			inp = getinoinfo(inp->i_parent);
84 		}
85 		if (loopcnt <= countdirs) {
86 			if (linkup(orphan, inp->i_dotdot, NULL)) {
87 				inp->i_parent = inp->i_dotdot = lfdir;
88 				inoinfo(lfdir)->ino_linkcnt--;
89 			}
90 			inoinfo(orphan)->ino_state = DFOUND;
91 			propagate();
92 			continue;
93 		}
94 		pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%u", orphan);
95 		if (reply("RECONNECT") == 0)
96 			continue;
97 		memset(&idesc, 0, sizeof(struct inodesc));
98 		idesc.id_type = DATA;
99 		idesc.id_number = inp->i_parent;
100 		idesc.id_parent = orphan;
101 		idesc.id_func = findname;
102 		idesc.id_name = namebuf;
103 		if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
104 			pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
105 		if (linkup(orphan, inp->i_parent, namebuf)) {
106 			idesc.id_func = clearentry;
107 			if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
108 				inoinfo(orphan)->ino_linkcnt++;
109 			inp->i_parent = inp->i_dotdot = lfdir;
110 			inoinfo(lfdir)->ino_linkcnt--;
111 		}
112 		inoinfo(orphan)->ino_state = DFOUND;
113 		propagate();
114 	}
115 }
116